Category : Key Documents(100)

This Port policy (AC-13) establishes standards for disposing of Port-owned property, covering items ranging from capital assets to small equipment, with the goals of saving costs, maximizing returns, and maintaining a proper audit trail. It defines when property should be disposed of — such as when it is excess, obsolete, damaged, or destroyed — and outlines the authorization requirements, including Commission approval for surplus property exceeding a set dollar threshold. Note that this policy does not address land, abandoned third-party property, or consumable supplies.

The Worldwide Airport Slot Guidelines (WASG), Edition 2, effective July 1, 2022, is a joint publication by Airports Council International (ACI), the International Air Transport Association (IATA), and the Worldwide Airport Coordinators Group (WWACG) that provides global standards and guidance for managing airport slot allocation. The document is intended to help airports, airlines, and coordinators navigate capacity constraints and scheduling processes at busy airports worldwide. Note that while this document covers broad international slot management principles, readers should consult applicable local laws and regulations for specific airport noise or capacity policies.

This October 2021 progress update presents findings from a Ground Noise Study conducted at Seattle-Tacoma International Airport (SEA). The presentation covers key acoustic concepts—including Maximum Sound Level (Lmax), Sound Exposure Level (SEL), and Equivalent Sound Level (Leq)—alongside topics such as sound propagation, the study's scope of work, noise monitoring activities, and planned next steps. The study aims to better understand and document ground-level noise impacts in and around the airport.

The Port of Seattle Commission is being asked to approve an $800,000 contribution to the City of Burien for the Miller Creek Culvert Replacement and Stream Restoration project, which aims to fix failing culverts near Sea-Tac International Airport that threaten protected wetland mitigation sites. The project will divert Miller Creek, replace a deteriorating culvert under Des Moines Memorial Boulevard, and construct fish-friendly culverts along 450 feet of restored stream habitat on Port property. Beyond protecting the Port's Clean Water Act permit compliance, the project delivers broader environmental benefits by removing the largest fish barrier on Miller Creek and creating a continuous, passable stream corridor through the watershed.

A study by NYU economist Michael Gilraine found that installing air filters in classrooms led to a 0.20 standard deviation improvement in math and English test scores, using a natural experiment from the 2015-2016 Aliso Canyon gas leak in Los Angeles. The gas company installed air filters in all schools within five miles of the leak, allowing researchers to compare student achievement between schools that received filters and those that did not. The findings suggest that air filtration is a cost-effective way to boost student achievement by reducing exposure to common indoor air pollutants.